EP 0907121 A2 19990407 - Digital oscillator using lookup table with multiple cycles
Title (en)
Digital oscillator using lookup table with multiple cycles
Title (de)
Digitaler Oszillator mit eienr Mehrzyklennachschlagetabelle
Title (fr)
Oscillateur numérique utilisant une table de consultation à plusieurs cycles
Publication
Application
Priority
US 94195997 A 19971001
Abstract (en)
A digital waveform oscillator generates digitized waveforms without distortion using a lookup table. The frequencies which may be generated using direct lookup tables at their fundamental table frequencies are increased according to this invention by including multiple cycles of the waveform within a single table. The selection of a table length L and a number of cycles N to be stored in a lookup table is done in a manner to optimize corresponding values of the frequencies to be generated and the sample rate. <IMAGE>
IPC 1-7
IPC 8 full level
G06F 1/03 (2006.01)
CPC (source: EP US)
G06F 1/0328 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0907121 A2 19990407; EP 0907121 A3 20010110; US 5936438 A 19990810
DOCDB simple family (application)
EP 98307986 A 19980930; US 94195997 A 19971001